<template>
  <div class="login">
    <el-form ref="loginForm" :model="loginForm" :rules="loginRules" class="login-form">
      <h3 class="title">青鸟请假管理系统</h3>
      <el-form-item prop="username">
        <el-input
          v-model="loginForm.username"
          type="text"
          auto-complete="off"
          placeholder="账号"
        >
          <svg-icon slot="prefix" icon-class="user" class="el-input__icon input-icon" />
        </el-input>
      </el-form-item>
      <el-form-item prop="password">
        <el-input
          v-model="loginForm.password"
          type="password"
          auto-complete="off"
          placeholder="密码"
          @keyup.enter.native="handleLogin"
        >
          <svg-icon slot="prefix" icon-class="password" class="el-input__icon input-icon" />
        </el-input>
      </el-form-item>
      <el-form-item prop="code" v-if="captchaEnabled">
        <el-input
          v-model="loginForm.code"
          auto-complete="off"
          placeholder="验证码"
          style="width: 63%"
          @keyup.enter.native="handleLogin"
        >
          <svg-icon slot="prefix" icon-class="validCode" class="el-input__icon input-icon" />
        </el-input>
        <div class="login-code">
          <img :src="codeUrl" @click="getCode" class="login-code-img"/>
        </div>
      </el-form-item>
      <el-checkbox v-model="loginForm.rememberMe" style="margin:0px 0px 25px 0px;">记住密码</el-checkbox>
      <el-form-item style="width:100%;">
        <el-button
          :loading="loading"
          size="medium"
          type="primary"
          style="width:100%;"
          @click.native.prevent="handleLogin"
          class="login-btn"
        >
          <span v-if="!loading">登 录</span>
          <span v-else>登 录 中...</span>
        </el-button>
        <div style="float: right;" v-if="register">
          <router-link class="link-type" :to="'/register'">立即注册</router-link>
        </div>
      </el-form-item>
    </el-form>
    <!--  底部  -->
    <div class="el-login-footer">
      <span>成功不是将来才有的，而是从决定去做的那一刻起，持续累积而成。</span>
    </div>
  </div>
</template>


<script>

import { getCodeImg } from "@/api/login";

import Cookies from "js-cookie";

import { encrypt, decrypt } from '@/utils/jsencrypt'




export default {

  name: "Login",

  data() {

    return {

      codeUrl: "",

      loginForm: {

        username: "admin",

        password: "admin123",

        rememberMe: false,

        code: "",

        uuid: ""

      },

      loginRules: {

        username: [

          { required: true, trigger: "blur", message: "请输入您的账号" }

        ],

        password: [

          { required: true, trigger: "blur", message: "请输入您的密码" }

        ],

        code: [{ required: true, trigger: "change", message: "请输入验证码" }]

      },

      loading: false,

// 验证码开关

      captchaEnabled: true,

// 注册开关

      register: false,

      redirect: undefined

    };

  },

  watch: {

    $route: {

      handler: function(route) {

        this.redirect = route.query && route.query.redirect;

      },

      immediate: true

    }

  },

  created() {

    this.getCode();

    this.getCookie();

  },

  methods: {

    getCode() {

      getCodeImg().then(res => {

        this.captchaEnabled = res.captchaEnabled === undefined ? true : res.captchaEnabled;

        if (this.captchaEnabled) {

          this.codeUrl = "data:image/gif;base64," + res.img;

          this.loginForm.uuid = res.uuid;

        }

      });

    },

    getCookie() {

      const username = Cookies.get("username");

      const password = Cookies.get("password");

      const rememberMe = Cookies.get('rememberMe')

      this.loginForm = {

        username: username === undefined ? this.loginForm.username : username,

        password: password === undefined ? this.loginForm.password : decrypt(password),

        rememberMe: rememberMe === undefined ? false : Boolean(rememberMe)

      };

    },

    handleLogin() {

      this.$refs.loginForm.validate(valid => {

        if (valid) {

          this.loading = true;

          if (this.loginForm.rememberMe) {

            Cookies.set("username", this.loginForm.username, { expires: 30 });

            Cookies.set("password", encrypt(this.loginForm.password), { expires: 30 });

            Cookies.set('rememberMe', this.loginForm.rememberMe, { expires: 30 });

          } else {

            Cookies.remove("username");

            Cookies.remove("password");

            Cookies.remove('rememberMe');

          }

          this.$store.dispatch("Login", this.loginForm).then(() => {

            this.$router.push({ path: this.redirect || "/" }).catch(()=>{});

          }).catch(() => {

            this.loading = false;

            if (this.captchaEnabled) {

              this.getCode();

            }

          });

        }

      });

    }

  }

};

</script>




<style rel="stylesheet/scss" lang="scss">

.login {

  display: flex;

  justify-content: center;

  align-items: center;

  height: 100%;

  background-image: url("../assets/images/login-background.jpg");

  background-size: cover;

}

.title {

  margin: 0px auto 30px auto;

  text-align: center;

  color: #000c17;

  font-size: 32px;

  font-weight: 500;

}




.login-form {

  border-radius: 6px;

  background: rgba(0,0,0,0);

  width: 380px;

  padding: 25px 25px 5px 25px;

  .el-input {

    height: 38px;

    input {

      height: 38px;

    }

  }

  .input-icon {

    height: 39px;

    width: 14px;

    margin-left: 2px;

  }

}

.login-tip {

  font-size: 13px;

  text-align: center;

  color: #bfbfbf;

}

.login-code {

  width: 33%;

  height: 38px;

  float: right;

  img {

    cursor: pointer;

    vertical-align: middle;

  }

}

.el-login-footer {

  height: 40px;

  line-height: 40px;

  position: fixed;

  bottom: 0;

  width: 100%;

  text-align: center;

  color: #000c17;

  font-family: Arial;

  font-size: 14px;

  letter-spacing: 1px;

}

.login-code-img {

  height: 38px;

}

.login-btn{

  background-image: linear-gradient(160deg, #0093E9 0%, #80D0C7 100%);

  font-size: 16px;

}


</style>
